Articles with "speed limit" as a keyword



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Quantum Speed Limit of a Two-Level System Interacting with Multiple Bosonic Reservoirs

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Published in 2019 at "International Journal of Theoretical Physics"

DOI: 10.1007/s10773-019-04325-y

Abstract: A physical model for a two-level atom simultaneously coupled to multiple Bosonic reservoirs is investigated. The explicit expression of quantum speed limit is obtained. Analysis show that as long as the number of reservoirs satisfies… read more here.

Keywords: quantum speed; two level; system; multiple bosonic ... See more keywords
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A close examination of speed limit credibility and compliance on UK roads

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Published in 2020 at "Iatss Research"

DOI: 10.1016/j.iatssr.2019.05.003

Abstract: Abstract Speed is at the core of the road safety problem and speed management is a tool for road safety. Speed limits that are more credible are supposed to encourage drivers to comply with speed… read more here.

Keywords: speed; close examination; road safety; speed limit ... See more keywords
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Coordinated Variable Speed Limit, Ramp Metering and Lane Change Control of Highway Traffic

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Published in 2017 at "IFAC-PapersOnLine"

DOI: 10.1016/j.ifacol.2017.08.982

Abstract: Abstract Integrated variable speed limit and ramp metering control for highway traffic is expected to smooth the traffic flow and improve the mobility of highway networks. Our recent results showed that variable speed limit control… read more here.

Keywords: traffic; control; variable speed; speed limit ... See more keywords
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Evaluation of Integrated Variable Speed Limit and Lane Change Control for Highway Traffic Flow

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Published in 2021 at "IFAC-PapersOnLine"

DOI: 10.1016/j.ifacol.2021.06.015

Abstract: Abstract A sudden lane drop on a freeway with high volume of vehicles can cause severe traffic congestion and safety issues. Forced lane changes near the bottleneck reduce the traffic mobility on all lanes and… read more here.

Keywords: traffic; lane; control; speed ... See more keywords
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Coronary flow velocity at rest: a speed limit for a safe prognostic journey?

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Published in 2022 at "Acta Cardiologica"

DOI: 10.1080/00015385.2021.2020483

Abstract: Abstract The study presented by Zagatina and co-workers in the present issue of the Journal raises an interesting issue. Coronary flow velocity at rest is usually associated with dynamic assessment during stress but it may… read more here.

Keywords: coronary flow; flow velocity; speed limit; rest speed ... See more keywords
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The effect of speed limit reductions in urban areas on cyclists' injuries in collisions with cars.

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Published in 2019 at "Traffic injury prevention"

DOI: 10.1080/15389588.2019.1680836

Abstract: Objective: Impact speed is one of the most important factors explaining the severity of injuries to cyclists when they collide with passenger cars. To reduce injury severity (especially for vulnerable road users), since 2008, Swedish… read more here.

Keywords: urban areas; speed; severity; speed limit ... See more keywords
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Controlling the quantum speed limit time for unital maps via filtering operations

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Published in 2020 at "Laser Physics Letters"

DOI: 10.1088/1612-202x/abac15

Abstract: The minimum time a system needs to change from an initial state to a final orthogonal state is called quantum speed limit time. Quantum speed limit time can be used to quantify the speed of… read more here.

Keywords: quantum speed; time; limit time; speed limit ... See more keywords
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Thermodynamics and the quantum speed limit in the non-Markovian regime

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Published in 2021 at "Physical Review A"

DOI: 10.1103/physreva.104.042202

Abstract: Quantum speed limit (QSL) for open quantum systems in the non-Markovian regime is analyzed. We provide a lower bound for the time required to transform an initial state to a final state in terms of… read more here.

Keywords: non markovian; thermodynamics; speed limit; markovian regime ... See more keywords
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Tighter thermodynamic bound on the speed limit in systems with unidirectional transitions.

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Published in 2020 at "Physical Review E"

DOI: 10.1103/physreve.102.062121

Abstract: We consider a general discrete state-space system with both unidirectional and bidirectional links. In contrast to bidirectional links, there is no reverse transition along the unidirectional links. Herein, we first compute the statistical length and… read more here.

Keywords: thermodynamic bound; unidirectional transitions; bound; bound speed ... See more keywords
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Unified approach to classical speed limit and thermodynamic uncertainty relation.

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Published in 2020 at "Physical Review E"

DOI: 10.1103/physreve.102.062132

Abstract: The total entropy production quantifies the extent of irreversibility in thermodynamic systems, which is nonnegative for any feasible dynamics. When additional information such as the initial and final states or moments of an observable is… read more here.

Keywords: classical speed; speed; relation; speed limit ... See more keywords
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Quantum Speed Limit is Not Quantum.

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Published in 2018 at "Physical review letters"

DOI: 10.1103/physrevlett.120.070402

Abstract: The quantum speed limit (QSL), or the energy-time uncertainty relation, describes the fundamental maximum rate for quantum time evolution and has been regarded as being unique in quantum mechanics. In this study, we obtain a… read more here.

Keywords: quantum speed; limit; mechanics; speed limit ... See more keywords